EP0117873A4 - Dynamic pressure type of fluid bearing device. - Google Patents

Dynamic pressure type of fluid bearing device.

Info

Publication number
EP0117873A4
EP0117873A4 EP19830902824 EP83902824A EP0117873A4 EP 0117873 A4 EP0117873 A4 EP 0117873A4 EP 19830902824 EP19830902824 EP 19830902824 EP 83902824 A EP83902824 A EP 83902824A EP 0117873 A4 EP0117873 A4 EP 0117873A4
Authority
EP
European Patent Office
Prior art keywords
dynamic pressure
pressure type
bearing device
fluid bearing
grooves
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19830902824
Other languages
German (de)
French (fr)
Other versions
EP0117873A1 (en
EP0117873B1 (en
Inventor
Takafumi Asada
Toshio Onishi
Kajuyoshi Senma
Hideo Matsumoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP57153005A external-priority patent/JPS5943216A/en
Priority claimed from JP21720782A external-priority patent/JPS59106718A/en
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of EP0117873A1 publication Critical patent/EP0117873A1/en
Publication of EP0117873A4 publication Critical patent/EP0117873A4/en
Application granted granted Critical
Publication of EP0117873B1 publication Critical patent/EP0117873B1/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
    • F16C17/08—Sliding-contact bearings for exclusively rotary movement for axial load only for supporting the end face of a shaft or other member, e.g. footstep bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/10—Sliding-contact bearings for exclusively rotary movement for both radial and axial load
    • F16C17/102—Sliding-contact bearings for exclusively rotary movement for both radial and axial load with grooves in the bearing surface to generate hydrodynamic pressure
    • F16C17/107—Sliding-contact bearings for exclusively rotary movement for both radial and axial load with grooves in the bearing surface to generate hydrodynamic pressure with at least one surface for radial load and at least one surface for axial load
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/10—Construction relative to lubrication
    • F16C33/102—Construction relative to lubrication with grease as lubricant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/10—Construction relative to lubrication
    • F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
    • F16C33/106—Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
    • F16C33/107—Grooves for generating pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/02—Rigid support of bearing units; Housings, e.g. caps, covers in the case of sliding-contact bearings

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

A dynamic pressure type of fluid bearing device has a housing (11) provided with a bearing hole (11a), a shaft (13) rotatably mounted in the hole (11a), and a thrust bearing member (12) mounted on the end face of the housing (11), grooves (13b) in the surface of either the shaft (13) or the hole (11a), grooves (12a) provided in the surface of the member (12) in contact with the shaft (13), a ventilation groove (12e) communicating with the atmosphere and formed on the surface of the member (12) in contact with the housing (11) and lubricating oil (14) provided around the periphery of the grooves (13b). This prevents the lubricating oil flowing out because of variations in the atmospheric pressure.
EP83902824A 1982-09-02 1983-09-02 Dynamic pressure type of fluid bearing device Expired EP0117873B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP153005/82 1982-09-02
JP57153005A JPS5943216A (en) 1982-09-02 1982-09-02 Dynamic pressure type fluid bearing device
JP217207/82 1982-12-10
JP21720782A JPS59106718A (en) 1982-12-10 1982-12-10 Dynamic-pressure type fluid bearing apparatus

Publications (3)

Publication Number Publication Date
EP0117873A1 EP0117873A1 (en) 1984-09-12
EP0117873A4 true EP0117873A4 (en) 1985-02-18
EP0117873B1 EP0117873B1 (en) 1986-12-30

Family

ID=26481746

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83902824A Expired EP0117873B1 (en) 1982-09-02 1983-09-02 Dynamic pressure type of fluid bearing device

Country Status (4)

Country Link
US (1) US4557610A (en)
EP (1) EP0117873B1 (en)
DE (1) DE3368731D1 (en)
WO (1) WO1984001006A1 (en)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8401864A (en) * 1984-06-13 1986-01-02 Philips Nv BEARING SYSTEM COMPRISING TWO HYDRODYNAMIC BEARINGS ARRANGED IN LINE-UP.
BR8807903A (en) * 1988-04-25 1991-05-21 Aga Ab INK REMOVAL PROCESS
US5018880A (en) * 1988-06-28 1991-05-28 Canon Kabushiki Kaisha Dynamic pressure bearing device
DE68921256T2 (en) * 1988-06-28 1995-07-06 Canon Kk Hydrodynamic bearing.
DE3900729A1 (en) * 1989-01-12 1990-07-19 Philips Patentverwaltung TURNING ANODE TUBE WITH A SLIDING BEARING, ESPECIALLY A SPIRAL GROOVE BEARING
DE3900730A1 (en) * 1989-01-12 1990-07-19 Philips Patentverwaltung TURNING ANODE X-RAY TUBES WITH AT LEAST TWO SPIRAL GROOVE BEARINGS
JPH0335469A (en) * 1989-06-30 1991-02-15 Matsushita Electric Ind Co Ltd Disk driving device
EP0412509A3 (en) * 1989-08-11 1992-02-26 Ebara Corporation Bearing structure
JP2870057B2 (en) * 1989-11-07 1999-03-10 日本精工株式会社 Dynamic pressure bearing device
EP0444651B1 (en) * 1990-02-27 1997-05-02 Canon Kabushiki Kaisha Apparatus for supporting a shaft within a sleeve by means of a dynamic pressure bearing
JPH04145215A (en) * 1990-10-04 1992-05-19 Canon Inc Dynamic pressure bearing device
US5277499A (en) * 1990-10-04 1994-01-11 Canon Kabushiki Kaisha Dynamic pressure bearing apparatus
US5315196A (en) * 1991-08-08 1994-05-24 Canon Kabushiki Kaisha Shaft with grooves for dynamic pressure generation and motor employing the same
JP3206191B2 (en) * 1993-03-15 2001-09-04 松下電器産業株式会社 Spindle motor and method for assembling the same
US5407281A (en) 1994-07-22 1995-04-18 Quantum Corp. Self-replenishing hydrodynamic bearing
US5579579A (en) * 1994-12-08 1996-12-03 Quantum Corporation Method for making precision self-contained hydrodynamic bearing assembly
JP3411421B2 (en) * 1995-03-31 2003-06-03 松下電器産業株式会社 Manufacturing method of thrust plate for spindle motor
US5901013A (en) * 1997-08-11 1999-05-04 International Business Machines Corporation Fluid spindle bearing vent
US6004036A (en) * 1998-06-30 1999-12-21 Seagate Technology, Inc. Fluid dynamic bearing cartridge design incorporating a rotating shaft
JP3305278B2 (en) * 1999-03-26 2002-07-22 セイコーインスツルメンツ株式会社 Liquid dynamic pressure bearing and spindle motor
US6361214B1 (en) 1999-08-02 2002-03-26 Nidec Corporation Hydrodynamic-pressure bearing device and motor provided with the hydrodynamic-pressure bearing device
US6907769B2 (en) 2001-12-20 2005-06-21 Seagate Technology Llc Apparatus and method for detecting air contamination in fluid dynamic bearings
US6982510B1 (en) 2001-12-20 2006-01-03 Seagate Technology Llc Low profile fluid dynamic bearing
DE10231962B4 (en) * 2002-07-15 2005-10-13 Minebea Co., Ltd. Hydrodynamic bearing, spindle motor and hard disk drive
US6948852B2 (en) 2002-07-15 2005-09-27 Minebea Co., Ltd. Hydrodynamic bearing, spindle motor and hard disk drive
US7095147B2 (en) * 2003-01-21 2006-08-22 Seagate Technology Llc Single thrust magnetically biased fully recirculating self purging fluid dynamic bearing motor
WO2005028891A1 (en) * 2003-09-12 2005-03-31 Minebea Co. Ltd. Fluid dynamic bearing unit
JP2006029565A (en) * 2004-07-21 2006-02-02 Matsushita Electric Ind Co Ltd Fluid bearing device, spindle motor having the same, and hard disk drive device
US7140777B2 (en) * 2004-12-20 2006-11-28 Hon Hai Precision Industry Co., Ltd. Hydrodynamic bearing assembly
US7956499B2 (en) * 2005-06-02 2011-06-07 Seagate Technology Llc Motor magnetic force attenuator
DE102006005604B4 (en) * 2006-02-06 2007-11-22 Minebea Co., Ltd. Fluid dynamic storage system
JP2009024771A (en) * 2007-07-19 2009-02-05 Nippon Densan Corp Bearing unit, motor fitted with this bearing unit and disk driving device
CN106402170B (en) * 2015-11-20 2018-05-01 上海犋马石油技术服务有限公司 The double thrust bearing device of electric submersible pump unit motor protecter
TWI644025B (en) * 2017-04-12 2018-12-11 東培工業股份有限公司 Fan device and bearing assembly thereof
US11286940B2 (en) * 2018-02-14 2022-03-29 Nidec Sankyo Corporation Pump device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4445793A (en) * 1981-09-18 1984-05-01 Matsushita Electric Industrial Co., Ltd. Bearing

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3758177A (en) * 1970-03-12 1973-09-11 Atomic Energy Authority Uk Air bearings
GB1337621A (en) * 1971-01-01 1973-11-14 Atomic Energy Authority Uk Air bearings
JPS5616421A (en) * 1979-07-21 1981-02-17 Ihara Chem Ind Co Ltd Preparation of high purity phenol
JPS56160421A (en) * 1980-05-12 1981-12-10 Nippon Seiko Kk Sleeve rotary type spindle unit
JPS584821U (en) * 1981-07-01 1983-01-12 日本精工株式会社 Dynamic pressure bearing device with air holes
JPS584821A (en) * 1981-07-02 1983-01-12 Mitsubishi Mining & Cement Co Ltd Production of calcium phosphate fiber
JPS58180283A (en) * 1982-04-14 1983-10-21 Eitaro Hattori Method for decreasing concentration of nitrous acid in fishpond
JPS58187615A (en) * 1982-04-28 1983-11-01 Matsushita Electric Ind Co Ltd Fluid bearing device in direction of thrust

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4445793A (en) * 1981-09-18 1984-05-01 Matsushita Electric Industrial Co., Ltd. Bearing

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 8, no. 22, (M-272)(1459), January 31, 1984; & JP-A-58 180 283 (MATSUSHITA DENKI SANGYO K.K.) (22.10.1983) *
PATENT ABSTRACTS OF JAPAN, vol. 8, no. 32, (M-275)(1469), February 10, 1984; & JP-A-58 187 615 (MATSUSHITA DENKI SANGYO K.K.) (01.11.1983) *
See also references of WO8401006A1 *

Also Published As

Publication number Publication date
DE3368731D1 (en) 1987-02-05
EP0117873A1 (en) 1984-09-12
EP0117873B1 (en) 1986-12-30
WO1984001006A1 (en) 1984-03-15
US4557610A (en) 1985-12-10

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